摘要: Given a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not co... 阅读全文
posted @ 2014-10-27 23:23 birdhack 阅读(137) 评论(0) 推荐(0) 编辑
摘要: Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers be palindromes? (i... 阅读全文
posted @ 2014-10-27 18:31 birdhack 阅读(85) 评论(0) 推荐(0) 编辑